Table 3

Associations Between Weekend-Only and Not–Weekend–Only Drug Use and Any Increase in Severity, Days of Use of Drug of Most Concern, and Drug Use Consequences

	Proportions With Outcome		Odds Ratios, Weekend-Only vs Not–Weekend-Only

Outcomes	Weekend Only Use (n = 52)	Not Weekend Only Use (n = 431)	Unadjusted Odds Ratio, OR (95% CI)	P Value	Adjusted Odds Ratio, AOR (95% CI)	P Value
Increase in drug use severity^b	44%	56%	0.62 (0.35–1.12)	0.11	0.56 (0.30–1.04)	0.07
Increase in number of days per month of use of drug of most concern^c	37%	35%	1.09 (0.60–1.98)	0.78	0.48 (0.25–0.94)	0.03
Increase in drug use consequences^d	26%	29%	0.84 (0.43–1.63)	0.60	0.81 (0.41–1.59)	0.54

a Adjusted for baseline age, gender, race, Hispanic, education, AUDIT-C score, employment, OASIS-score, EUROQOL-score, randomization status, and baseline value of outcome.
↵b As measured by ASSIST global score.
↵c As measured by Timeline Followback.
↵d As measured by SIP-D inventory score.